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Preparation of Spherical Materials Based on Controlled Crystallization

He Xiangming,Wang Li,Ren Jianguo,Pu Weihua,Jiang Changyin,Wan Chunrong

Strategic Study of CAE 2006, Volume 8, Issue 7, Pages 36-41

Abstract:

Theory，equipment and technology of controlled crystallization process for preparation of sphericalmaterials are introduced in this paper.Especially, the preparation of spherical, high density and high activity materials for batteries areThe spherical materials lead to effective surface modification.

Keywords： controlled crystallization spherical active materials high density

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Edge preparation methods for cutting tools: a review

Frontiers of Mechanical Engineering 2023, Volume 18, Issue 4, doi: 10.1007/s11465-023-0766-y

Abstract: Edge preparation can remove cutting edge defects, such as burrs, chippings, and grinding marks, generatedVarious edge preparation methods have been proposed for different tool matrix materials, geometries,This study presents a scientific and systematic review of the development of tool edge preparation technologyThen, edge preparation methods for cutting tools, in which materials at the cutting edge area are removedFinally, the future development direction of tool edge preparation technology is prospected.

Keywords： edge preparation method preparation principle cutting edge geometry edge characterization tool performance

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Facile preparation of polybenzoxazine-based carbon microspheres with nitrogen functionalities: Effects

Uthen Thubsuang, Suphawadee Chotirut, Apisit Thongnok, Archw Promraksa, Mudtorlep Nisoa, Nicharat Manmuanpom, Sujitra Wongkasemjit, Thanyalak Chaisuwan

Frontiers of Chemical Science and Engineering 2020, Volume 14, Issue 6, Pages 1072-1086 doi: 10.1007/s11705-019-1899-8

Abstract: In this study, polybenzoxazine (PBZ)-based carbon microspheres were prepared via a facile method using a mixture of formaldehyde (F) and dimethylformamide (DMF) as the solvent. The PBZ microspheres were successfully obtained at the F/DMF weight ratios of 0.4 and 0.6. These microspheres exhibited high nitrogen contents after carbonization. The microstructures of all the samples showed an amorphous phase and a partial graphitic phase. The porous carbon with the F/DMF ratio of 0.4 showed significantly higher specific capacitance (275.1 F g ) than the reference carbon (198.9 F g ) at 0.05 A g . This can be attributed to the synergistic electrical double-layer capacitor and pseudo-capacitor behaviors of the porous carbon with the F/DMF ratio of 0.4. The presence of nitrogen/oxygen functionalities induced pseudo-capacitance in the microspheres, and hence increased their total specific capacitance. After activation with CO , the specific surface area of the carbon microspheres with the F/DMF ratio of 0.4 increased from 349 to 859 m g and the specific capacitance increased to 424.7 F g . This value is approximately two times higher than that of the reference carbon. The results indicated that the F/DMF ratio of 0.4 was suitable for preparing carbon microspheres with good supercapacitive performance. The nitrogen/oxygen functionalities and high specific surface area of the microspheres were responsible for their high capacitance.

Keywords： PBZ carbon porous materials microsphere supercapacitor

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Study of properties and the preparation of composite of wheat straw and HDPE/PP

Yang Zhaozhe and Xu min

Strategic Study of CAE 2014, Volume 16, Issue 4, Pages 30-33

Abstract:

The paper is mixing the raw materials of wheat straw as enhanceosome

Keywords： wheat straw powder HDPE PP composite materials performance studies

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Opportunities and Challenges for Metal Matrix Composites in the Context of Equipment Upgrading

Wu Gaohui, Kuang Zeyang

Strategic Study of CAE 2020, Volume 22, Issue 2, Pages 79-90 doi: 10.15302/J-SSCAE-2020.02.012

Abstract: The key technological breakthroughs in the main preparation methods of MMCs, such as in-situ synthesisthe construction of standards and database systems, and developing low-cost and high-quality material preparation

Keywords： metal matrix composites industrialized application equipment development materials preparation

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The effect of preparation conditions of Pt/Al

Lei YUAN, Xiang ZHENG, Kaijiao DUAN, Hao HU, Jinggang WANG, Seong Ihl WOO, Zhiming LIU

Frontiers of Environmental Science & Engineering 2013, Volume 7, Issue 3, Pages 457-463 doi: 10.1007/s11783-013-0512-5

Abstract: Catalyst preparation conditions exert significant influence on the catalytic performance, and the catalyst

Keywords： NO_x reduction Pt/Al₂O₃ preparation condition H

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Selective preparation for biofuels and high value chemicals based on biochar catalysts

Frontiers in Energy 2023, Volume 17, Issue 5, Pages 635-653 doi: 10.1007/s11708-023-0878-4

Abstract: The topics mainly include the modification of biochar catalysts, the preparation of energy products,This paper identifies the latest preparation for energy products and other high-value chemicals based

Keywords： biomass biochar catalysts biofuels high chemicals

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A highly efficient methodology for the preparation of

Yongxin Zhang, Shucheng Wang, Yaodong Huang

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 3, Pages 679-686 doi: 10.1007/s11705-020-1979-9

Abstract: A convenient and highly efficient method is described for the synthesis of -methoxycarbazole derivatives, including those with sterically demanding, benzannulated, or strongly electron-donating or -withdrawing substituents. Various -methoxycarbazole derivatives were directly prepared in good-to-moderate yields by the Pd (dba) CHCl /9,9-dimethyl-4,5-bis(diphenylphosphino)xanthene-catalyzed reactions of the corresponding dibromobiphenyl compounds and methoxya-mine. Based on this methodology, the first total synthesis of 3,3′-[oxybis(methylene)]bis(9-methoxy-9 -carbazole), an antimicrobial dimeric carbazole alkaloid previously isolated from the stem bark of , was achieved in 18% yield over seven steps from 1,2-dibromobenzene.

Keywords： N-methoxyl carbazole dimeric N-methoxyl carbazole alkaloid total synthesis double N-arylation of methoxyamine

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Kinetics of pozzolanic reaction for preparation of flue gas desulfurizer from fly ash and Ca(OH)2

WANG Jingang, HU Jinbang, WANG Daobin, DUAN Zhenya

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 3, Pages 266-270 doi: 10.1007/s11705-007-0048-y

Abstract: A kinetic model of the pozzolanic reaction for the preparation of flue gas desulfurizers from fly ash

Keywords： comparison calculated pozzolanic reaction precision preparation

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preparation of Ag@AgCl/Bio-veins composites and their photocatalytic activity and recyclability

Frontiers of Chemical Science and Engineering 2023, Volume 17, Issue 7, Pages 906-917 doi: 10.1007/s11705-022-2273-9

Abstract: practical application and may also offer new possibilities for the high-value utilization of biomass materials

Keywords： Ag@AgCl biological veins photocatalytic activity recyclability

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Effect of preparation parameters on catalytic properties of Pt/graphite

LIU Zhengqian, MA Jun, ZHAO Lei

Frontiers of Environmental Science & Engineering 2007, Volume 1, Issue 4, Pages 482-487 doi: 10.1007/s11783-007-0077-2

Abstract: Catalytic ozonation of aqueous solutions of oxalic acid was examined in the presence of graphite-supported platinum catalysts. The catalytic activity of graphite was significantly enhanced by loading platinum. The removal efficiency of oxalic acid was 3.0%, 47.6% and 99.3% for ozonation alone, graphite catalytic ozonation and Pt/graphite catalytic ozonation in 30 min under the experimental condition, respectively. The influence of support pretreatment, solvent, impregnation time, platinum loading amount and reduction temperature on the activity of Pt/graphite catalyst was investigated. The pretreatment of graphite support had no effect on activity improvement of Pt/graphite catalyst. Solvent and impregnation time also had no great effect on the activity. Platinum loading amount and reduction temperature influenced the catalyst activity significantly. The optimal catalytic performance of Pt/graphite was obtained when 1.0% platinum loading and 623 K of reduction temperature was adopted. The Pt/graphite catalyst was used for five times with no significant decrease in its activity and more than 90% oxalic acid removal was obtained.

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Preparation and application of magnetic microsphere carriers

ZHANG Bo, XING Jianmin, LIU Huizhou

Frontiers of Chemical Science and Engineering 2007, Volume 1, Issue 1, Pages 96-101 doi: 10.1007/s11705-007-0019-3

Abstract: In this paper, preparation methods, surface modification and application of magnetic carriers are reviewed

Keywords： microsphere biomedicine DNA purification preparation

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Reactive extraction for preparation of hydrogen peroxide under pressure

CHENG Yongxi, LI Hongtao, WANG Li, LÜ Shuxiang

Frontiers of Chemical Science and Engineering 2008, Volume 2, Issue 3, Pages 335-340 doi: 10.1007/s11705-008-0042-z

Abstract: The preparation of hydrogen peroxide from anthrahydroquinone by reactive extraction was investigated.

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Review on design, preparation and performance characterization of gelled fuels for advanced propulsion

Frontiers of Chemical Science and Engineering 2022, Volume 16, Issue 6, Pages 819-837 doi: 10.1007/s11705-021-2122-2

Abstract: This review provides an overview on design, preparation and performance characterization of gelled fuelsThe composition, preparation process and gelation mechanism of gelled high-energy-density fuels are described

Keywords： gelled fuels high-energy-density fuels rheological properties atomization combustion

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Hierarchically porous zeolites synthesized with carbon materials as templates

Frontiers of Chemical Science and Engineering 2021, Volume 15, Issue 6, Pages 1444-1461 doi: 10.1007/s11705-021-2090-6

Abstract: From both industrial and scientific perspectives, different carbon materials have been widely employedas hard templates for the preparation of hierarchically porous zeolites during the past two decades.In this review, the progress in synthetic strategies using carbon materials as templates is comprehensivelyDirect templates methods, by which the carbon materials are directly mixed with precursors gel as hard

Keywords： hierarchical zeolites carbon materials direct templates indirect templates carbon-silica composites

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Title Author Date Type Operation

Preparation of Spherical Materials Based on Controlled Crystallization

He Xiangming,Wang Li,Ren Jianguo,Pu Weihua,Jiang Changyin,Wan Chunrong

Journal Article

Edge preparation methods for cutting tools: a review

Journal Article

Facile preparation of polybenzoxazine-based carbon microspheres with nitrogen functionalities: Effects

Uthen Thubsuang, Suphawadee Chotirut, Apisit Thongnok, Archw Promraksa, Mudtorlep Nisoa, Nicharat Manmuanpom, Sujitra Wongkasemjit, Thanyalak Chaisuwan

Journal Article

Study of properties and the preparation of composite of wheat straw and HDPE/PP

Yang Zhaozhe and Xu min

Journal Article

Opportunities and Challenges for Metal Matrix Composites in the Context of Equipment Upgrading

Wu Gaohui, Kuang Zeyang

Journal Article

The effect of preparation conditions of Pt/Al

Lei YUAN, Xiang ZHENG, Kaijiao DUAN, Hao HU, Jinggang WANG, Seong Ihl WOO, Zhiming LIU

Journal Article

Selective preparation for biofuels and high value chemicals based on biochar catalysts

Journal Article